@Entity
('agent_conversations')
export class AgentConversation {
  @PrimaryGeneratedColumn('uuid')
  id: string;  @Column
({ type: 'varchar' })
  user_id: string;  @Column
({ type: 'jsonb', default: [] })
  messages: AgentMessage[];  @Column
({ type: 'varchar', default: 'active' })
  status: 'active' | 'completed' | 'archived';
}